Pulling force tester for stayguy of guyed tower

Abstract

The invention relates to a pulling force tester for stayguy of a guyed tower. The tester comprises an upper clamp plate, a lower clamp plate, a spiral strainer, a hydraulic jack strainer, a pulling force sensor, a digital display gauge, rigging shackles, and the like, wherein an inner screw rod and an outer sleeve of the spiral strainer are in threaded connection with each other, the spiral strainer is connected on the left sides and the right sides of the upper clamp plate and the lower clamp plate, one end of the spiral strainer is connected with the hydraulic jack strainer which can be connected with the upper clamp plate or the lower clamp plate, the other end of the spiral strainer can be directly connected with the upper clamp plate or the lower clamp plate or by the pulling force sensor, the digital display gauge is connected on the pulling force sensor, and an oil pressure gauge is connected on the hydraulic jack strainer. The invention has the advantages that the tester is light and portable, can operate on the ground, needs less operating staff and can be taken out by just two users; and when used for testing the pulling force of the stayguy, the tester does not damage the stayguy, test data is accurate, test time is short, and one stayguy can be tested in 10 minutes.

Description

Technical field: [0001] The invention relates to a cable tension tester for a cable tower. Background technique: [0002] Medium and short wave antennas are important equipment for broadcasting stations. In my country, most medium-wave antennas use guyed towers as emitters, and most short-wave antennas use guyed towers as supports. One year after the guyed tower is erected, structural inspection, initial tension test, and verticality adjustment are required. In the future, it will be overhauled, maintained, checked and adjusted every 5 years, so as to ensure the reliable operation of the medium and short wave antenna. There is a very important index for the guy wire of the guy tower, which is to maintain the design initial tension of the guy wire, so as to ensure the stability of the guy tower. Therefore, testing the initial tension of the guy wire is an important task. In our country, due to poor maintenance of medium-wave towers, the initial tension of the cable towers ...

AI Technical Summary

Problems solved by technology

[0004] (1) It is easy to damage the pull wire (at the position where the test rope is stuck on the official pull wire, when the test gourd and the tension gauge are connected, the official pull wire will bend);

[0005] (2) The measurement is inaccurate (when the gourd is tested hard, the tower will be biased to the angle of the test tension);

[0006] (3) The tools used are many and heavy (ladders, rope sets, snap rings, rigging shackles, gourds, and tension gauges are required. The gourds and tension gauges used must match the pull force of the pull wire, and the pull force is required to be slightly larger);

[0007] (4) A lot of manpower is invested (generally, there is no regular road at the location of the pull wire, and tools and equipment can be entered at one time, and at least 4 people are required to participate in the work);

[0008] (5) High labor intensity (you need to go up a ladder to work at a high place, and you need to clamp the noose on the official line; the hanging point of the gourd is relatively high, so you can hang it up by people; the pulling force of the pull line is large, and the man who pulls the gourd also needs a lot of effort) ;

[0009] (6) It takes a long time to test the pulling force of a cable, about 30 minutes or even longer

[0011] Due to these shortcomings, the antenna overhaul tests the initial tension of the cable. Generally, only a few cable tensions are measured for several towers. Most of the cable tension is recognized by experience, which is not very scientific and standardized.

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